I hear a noise from the belts yet.
The noise louder when the throttle is in idle position.
When i step to the throttle the noise is gone.
What is the problem?
Can water pump give noise if that fail?
What should i see?
Thanks for your help!

Sure the water pump can make noise, kind of hard to describe though.
Grab ahold of the fan and try to wiggle it. If there's visible
movement of the fan blades, then you probably ought to consider
replacing the water pump.
Other sources of noise could be anything driven by the belts;
especially the alternator.
good luck,
nate

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